Cam khwb cia hlau hlau yuav tsum tau siv thaum lub zog ntawm lub casting yog qhov siab thiab kev siv cov cam khwb cia hlau tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua. Txawm li cas los xij, qhov fluidity ntawm molten steel ntawm cam khwb cia hlau tsis zoo li cov hlau cam khwb cia, yog li lub thickness ntawm cov qauv pouring yuav tsum tsis txhob me heev thiab cov duab yuav tsum tsis txhob yuav nyuaj heev. Thaum cov ntsiab lus silicon raug tswj ntawm qhov txwv sab saud, qhov fluidity ntawm molten steel tuaj yeem txhim kho.
Resin coated xuab zeb plhaub pwm castingyog txheej txheem uas cov xuab zeb sib xyaw nrog cov thermosetting resin tau tso cai tuaj rau hauv kev sib cuag nrog cov khoom siv hlau ua kom sov, kom lub plhaub nyias thiab muaj zog ntawm pwm yog tsim nyob ib ncig ntawm lub pattem. Tom qab ntawd lub plhaub tau muab tshem tawm ntawm tus qauv thiab cov kev tiv thaiv thiab rub raug tshem tawm ua ke thiab khaws cia rau hauv lub khob nrog cov khoom tsim nyog rov qab thiab cov hlau molten yog nchuav rau hauv pwm.
Feem ntau, qhuav thiab nplua xuab zeb uas tsis muaj av nplaum yog siv los npaj lub plhaub molding xuab zeb. Qhov loj npaum li cas yuav tsum tau xaiv nyob ntawm qhov chaw tiav xav tau ntawmhlau astings. Zoo heev ib tug grain loj yuav tsum tau loj npaum li cas ntawm resin, uas ua rau cov pwm kim.
Cov khoom siv hluavtaws siv hauv plhaub molding yog qhov tseem ceeb ntawm cov thermosetting resins, uas tau hardened irreversibly los ntawm tshav kub. Cov resins feem ntau siv yog phenol formaldehyde resins. Ua ke nrog cov xuab zeb, lawv muaj zog heev thiab tiv taus cua sov. Cov phenolic resins siv hauv plhaub molding feem ntau yog ntawm ob theem hom, uas yog, cov resin muaj ntau tshaj phenol thiab ua zoo li cov khoom siv thermoplastic. Thaum lub sij hawm txheej nrog cov xuab zeb, resin yog ua ke nrog ib tug catalyst xws li hexa methylene tetramine nyob rau hauv ib feem ntawm li 14 mus rau 16% thiaj li mus tsim cov thermosetting yam ntxwv. Qhov kub kho rau cov no yuav nyob ib puag ncig 150 C thiab lub sijhawm xav tau yog 50 txog 60 s.
Qhov zoo ntawm Resin Coated Sand Plhaub Pwm Casting:
1. Resin Coated Sand Shell-pwm castings feem ntau yog qhov tseeb dua li cov xuab zeb castings. Nws yog ua tau kom tau txais kev kam rau siab ntawm +0.25 hli rau steel castings thiab +0. 35 hli rau grey cam khwb cia hlau castings nyob rau hauv ib txwm ua hauj lwm tej yam kev mob. Nyob rau hauv cov ntaub ntawv ntawm ze rau lub plhaub pwm, ib tug yuav tau txais nws nyob rau hauv ntau ntawm +0.03 txog +0.13 hli rau tej daim ntawv thov.
2. Ib tug smoother nto yuav tau nyob rau hauv lub plhaub castings. Qhov no yog feem ntau ua tiav los ntawm cov finer loj grain siv. Qhov ntau yam ntawm roughness yog ntawm qhov kev txiav txim ntawm 3 mus rau 6 mircrons.
3. Draft cov ces kaum, uas yog qis dua cov xuab zeb castings, yuav tsum tau nyob rau hauv lub plhaub pwm. Qhov kev txo qis hauv cov kaum sab xis tuaj yeem yog los ntawm 50 mus rau 75%, uas txo cov nqi ntawm cov khoom siv thiab cov nqi ua haujlwm tom ntej.
4. Qee zaum, cov cores tshwj xeeb yuav raug tshem tawm hauv plhaub molding. Txij li cov xuab zeb muaj lub zog siab, pwm tuaj yeem tsim tau raws li cov kab noj hniav sab hauv tuaj yeem tsim ncaj qha nrog qhov xav tau ntawm lub plhaub cores.
5. Tsis tas li ntawd, cov ntu nyias nyias (txog li 0.25 hli) ntawm hom cua txias lub tog raj kheej taub hau tuaj yeem ua tau yooj yim los ntawm lub plhaub molding vim lub zog ntau dua ntawm cov xuab zeb siv rau molding.
6. Permeability ntawm lub plhaub yog siab heev thiab yog li ntawd tsis muaj roj inclusions tshwm sim.
7. Cov xuab zeb me me heev yuav tsum tau siv.
8. Mechanization tau yooj yim ua tau vim yog kev ua haujlwm yooj yim koom nrog hauv plhaub molding.
Raw Khoom rau Resin Coated Sand Casting Txheej Txheem:
• Cam khwb cia hlau: Grey cam khwb cia hlau, Ductile cam khwb cia hlau.
• Cast Carbon Steel thiab Alloy Steel: Tsawg Carbon Steel, Nruab Nrab Carbon Steel thiab High Carbon Steel los ntawm AISI 1020 mus rau AISI 1060; 20CrMnTi, 20SiMn, 30SiMn, 30CrMo, 35CrMo, 35SiMn, 35CrMnSi, 40Mn, 40Cr, 42Cr, 42CrMo... thiab lwm yam ntawm kev thov.
• Cast Stainless Hlau: AISI 304, AISI 304L, AISI 316, AISI 316L thiab lwm yam stainless hlau qib.
• Cast Aluminium Alloys.
• tooj dag & tooj liab.
• Lwm yam khoom siv thiab cov qauv raws li kev thov
▶ Resin Coated Sand Casting Peev Xwm:
• Max Loj: 1,000 mm × 800 mm × 500 mm
• Qhov hnyav: 0.5 kg - 100 kg
• Ib xyoos twg muaj peev xwm: 2,000 tons
• Tolerances: Thaum Thov.
▶ Kev tshuaj xyuasResin Coated Sand Castings:
• Spectrographic thiab phau ntawv txheeb xyuas kom muaj nuj nqis
• Metallographic tsom xam
• Brinell, Rockwell thiab Vickers hardness tshuaj xyuas
• Kev tshuaj xyuas cov cuab yeej cuab tam
• Kev ntsuas qhov kub thiab txias tsis zoo
• Kev tshuaj xyuas huv
• UT, MT thiab RT tshuaj xyuas
▶ Resin Coated Sand Casting Procedures:
✔ Ua Cov Qauv Hlau. Pre-coated resin xuab zeb yuav tsum tau rhuab rau hauv cov qauv, yog li cov qauv hlau yog cov cuab yeej tsim nyog los ua lub plhaub molding castings.
✔ Ua Pre-coated Sand Mould. Tom qab txhim kho cov qauv hlau ntawm lub tshuab molding, cov xuab zeb ua ntej coated yuav raug tua rau hauv cov qauv, thiab tom qab cua sov, cov txheej txheej yuav molten, ces cov xuab zeb pwm ua cov xuab zeb thiab cov cores.
✔ Melting Cov Hlau Casting. Siv induction furnaces, cov ntaub ntawv yuav yaj mus rau hauv cov kua, ces cov tshuaj muaj pes tsawg leeg ntawm cov kua hlau yuav tsum tau soj ntsuam kom phim tus lej thiab feem pua.
✔ Pouring Hlau. Thaum cov hlau melted ua tau raws li qhov yuav tsum tau ua, ces lawv yuav muab nchuav rau hauv lub plhaub pwm. Raws li cov cim sib txawv ntawm cov qauv tsim, lub plhaub pwm yuav muab faus rau hauv cov xuab zeb ntsuab los yog cov txheej txheej.
✔ Txhaj tshuaj tiv thaiv, sib tsoo thiab ntxuav. Tom qab txias thiab solidification ntawm cov castings, cov risers, rooj vag los yog ntxiv hlau yuav tsum tau txiav tawm thiab tshem tawm. Tom qab ntawd cov hlau castings yuav raug ntxuav los ntawm cov khoom siv xuab zeb peening lossis txhaj tshuaj blasting tshuab. Tom qab sib tsoo lub taub hau lub rooj vag thiab cov kab sib cais, cov khoom tiav casting yuav tuaj, tos rau cov txheej txheem ntxiv yog tias xav tau.
▶ Cov txheej txheem tom qab Casting
• Deburring & Ntxuav
• Txhaj Tshuaj Txhaum / Xuab zeb Peening
• Kev kho cua sov: Normalization, Quench, Tempering, Carburization, Nitriding
• Kev Kho Hniav: Passivation, Andonizing, Electroplating, Kub Zinc Plating, Zinc Plating, Nickel Plating, Polishing, Electro-Polishing, Painting, GeoMet, Zintec.
• CNC Machining: Tig, Milling, Lathing, Drilling, Honing, Sib Tsoo.
▶ Vim Li Cas Koj XaivRMC Foundryrau Plhaub Pwm Casting Cheebtsam?
✔ Precision thiab yog li siv cov khoom siv siab. Koj yuav tau txais net lossis ze-net-puab cov khoom tom qab lub plhaub molding casting, nyob ntawm qhov yuav tsum tau ntawm cov neeg siv kawg, yuav tsis muaj los yog tsawg heev machining txheej txheem yuav tsum tau.
✔ Kev ua haujlwm saum npoo zoo dua. Ua tsaug rau cov khoom siv thev naus laus zis tshiab rau molding, cov castings los ntawm plhaub molding muaj qhov zoo thiab qhov tseeb dua.
✔ Kev xaiv zoo sib npaug piv rau cov xuab zeb casting thiab peev. Lub plhaub molding casting muaj kev ua tau zoo dua thiab nto dua li cov xuab zeb casting, thaum muaj nqi qis dua li precision peev casting.
